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| author | Kyoung Kim <kyoung.il.kim@intel.com> | 2018-03-21 12:39:50 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-12-03 20:32:14 -0800 |
| commit | 1aeb203a2feb48536454d888469a6bb4e9fb3b46 (patch) | |
| tree | d5fea1754d140dc11090b02131e7c4a283c5fb7a /chip/ish/config_chip.h | |
| parent | 360b6e1a16bed7a5c4b3d83e50a80ebc8aaf69d4 (diff) | |
| download | chrome-ec-1aeb203a2feb48536454d888469a6bb4e9fb3b46.tar.gz | |
ISH-i2c: support 1MHz, clock stretch, restart
- Support for 2 or more bytes size of command register
in slave device.
- Adjust parameters for FAST and FAST+ modes.
- added Restart and SCL stretch
BUG=b:113238573
TEST=test with FAST/FAST+ mode Elan TrackPad slave device.
Use i2c_xfer() API inside a test task which GPIO interrupt
(Elan device's INT line) wakes.
Change-Id: I1ebcef90d85d6ede90bb8687e20058bdf31bf4e8
Signed-off-by: Kyoung Kim <kyoung.il.kim@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/996799
Commit-Ready: Caveh Jalali <caveh@google.com>
Commit-Ready: Kyoung Il Kim <kyoung.il.kim@intel.com>
Tested-by: Kyoung Il Kim <kyoung.il.kim@intel.com>
Reviewed-by: Caveh Jalali <caveh@google.com>
Reviewed-by: Jett Rink <jettrink@chromium.org>
Reviewed-by: Kyoung Il Kim <kyoung.il.kim@intel.com>
Diffstat (limited to 'chip/ish/config_chip.h')
| -rw-r--r-- | chip/ish/config_chip.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/chip/ish/config_chip.h b/chip/ish/config_chip.h index 3e9d8605a3..273bcd0788 100644 --- a/chip/ish/config_chip.h +++ b/chip/ish/config_chip.h @@ -23,6 +23,8 @@ /* Maximum number of deferrable functions */ #define DEFERRABLE_MAX_COUNT 8 +/* this macro causes 'pause' and reduces loop counts inside loop. */ +#define CPU_RELAX() asm volatile("rep; nop" ::: "memory") /****************************************************************************/ /* Memory mapping */ |